• AD7176-2: Channel Scan Rate

    The AD7176-2 has a maximum output data rate of 250 kSPS but a channel scan rate
    of 50 kSPS/channel. What does this mean?

     

    When operating on a single channel the AD7176-2 can output data at up to 250
    kSPS.
    However, when more than one channel…

  • AD7176-2 Settle in a Single Cycle

    Can the ADC be configured to settle in a single cycle?

     

    Yes, setting the SING_CYC bit will allow this. It should be noted that the
    Sinc5+Sinc1 filter will settle in a single cycle at output data rates of 10
    kSPS and lower regardless of whether…

  • AD7176-2 THD performance

    Hi ADI,

    I'm using AD7176-2 to develop audio analyzer and analyze single-end signal THD. It is weird if I exchange the channel register setup of positive/negative, then I will get different THD performance (by Matlab FFT). 

    And THD performance of signal_negative…

  • How to change AD7176-2 sinc3 filter notch frequency?

    Hi,

    I used the register 0x28000060 and 0x28008060, and both of them change the sample rate and output data rate to 250kHz. But the sinc3 filter notch frequency of them at 50kHz. How can I change sinc3 filter notch frequency to 250kHz?

    Thanks,

    Alexyv

  • AD7176: Filter Options

    There are a number of filter options.  Which one should I use?

     

    The AD7176-2 has three filter options: Sinc5+Sinc1, Sinc3 and enhanced 50 & 60
    Hz filters. The Sinc5+Sinc1 is most suited to multichannel applications where
    fast multiplexing is…

  • 关于AD7176-2的使用问题

    最近在使用AD7176-2芯片。遇到了毕竟繁琐的问题。 系统要求在20bit的时候误差小于176个字。 但在使用AD7176-2  SPI(2M) 采样率2.5Ksps的时候  误差达到了(500-1000)误差,这个是未经过滤波的情况,在经过:滑动滤波+去极值+平均值+滑动滤波 误差仍然有200-300个字的误差  并且数据呈现递增的变化趋势。  采用100SPS采样,其他条件不变的情况下。 不进行软件滤波有500字的跳动,经过软件滤波有100-150内的跳动。  但是系统要求 需要有10HZ的输出速率…

  • AD7176 power sqeucing requirements

    There are various supply requirements for the AD7176. The user guide UG-478 U3,
    uses ADM1185ARMZ-1, a Quad voltage monitor and sequencer. It appears power
    sequencing is required, can ADI please confirm or comment

     

    The AD7176-2 does not…
  • What is the relationship between -3dB bandwidth and output data rate of AD7176-2 ?

    Dear sir,

           What is the relationship between -3dB bandwidth and output data rate of AD7176-2  ?  No data on -3DB bandwidth is given in the datasheet.

  • 精度ADC。关于AD7176-2的使用问题

    hi   最近在使用AD7176-2的时候遇到了一个问题,  我的采集器输出的差分电压信号,输出范围±5V(实际上有效区域是±4.5V)。 现在传感器的输出直接进入到了ADC的前端(增加了电阻和电容) 传感器的输出阻抗是10K,输出电容是20nF。,现在采集到的传感器的噪声字有1000个字。(传感器输出的噪声是0.056uV/HZ^0.5)  在实验的过程中 尝试了加一个射随电路(2个通道一边一个), 有一些改进。  想请问下 有没有针对这种情形下的 差分放大器,(只需要单位增益即可…